CMOS LC quadrature oscillators with enhanced tuning range by selective mode switching

Bagheri, Mahdi; Bagheri, R.; Larson, L.E.

doi:10.1109/rfic.2012.6242285

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…mode can be selected by SW4, which is implemented in series with . The frequency tuning range (FTR) is defined as [23] (29) …”

Section: Measurement Resultsmentioning

confidence: 99%

“…From [23], the real part of the admittance looking into the drain of M5 in Fig. 8 is determines the amplitude of oscillation.…”

Section: A Linear Analysis Of Improved Qomentioning

confidence: 99%

“…A figure of merit is used to compare this work against prior work that considers tuning range, as well as phase noise from previous work [23], (31) where is the phase noise in dBc/Hz, is the dc power consumption in mW, FTR is the frequency tuning range, and and are oscillation frequency and offset frequency, respectively. Table II shows the comparison results of this work with other works in 90-and 65-nm technologies.…”

Section: Comparison To State-of-the-art Oscillator Designsmentioning

confidence: 99%

See 2 more Smart Citations

Tuning-Range Enhancement Through Deterministic Mode Selection in RF Quadrature Oscillators

Bagheri

Bagheri²,

Buckwalter

et al. 2015

IEEE Trans. Microwave Theory Techn.

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Quadrature oscillators (QOs) based on parallel or series coupling mechanisms produce ambiguous phase relationships between the coupled oscillators. Deterministic mode selection is presented and analyzed for a series-coupled quadrature oscillator ( -QO) and leveraged to increase the tuning range of the QO. Series-coupled -QOs have been implemented in a 90-nm CMOS technology. Measured results show a frequency tuning range of 94% for a center frequency of 1.3 GHz, 60% for the oscillator operating at 3.7 GHz, and 52% for the oscillator operating at 4.4 GHz.Index Terms-Oscillator, phase noise, quadrature, tuning range.

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“…mode can be selected by SW4, which is implemented in series with . The frequency tuning range (FTR) is defined as [23] (29) …”

Section: Measurement Resultsmentioning

confidence: 99%

“…From [23], the real part of the admittance looking into the drain of M5 in Fig. 8 is determines the amplitude of oscillation.…”

Section: A Linear Analysis Of Improved Qomentioning

confidence: 99%

Section: Comparison To State-of-the-art Oscillator Designsmentioning

confidence: 99%

See 1 more Smart Citation

Tuning-Range Enhancement Through Deterministic Mode Selection in RF Quadrature Oscillators

Bagheri

Bagheri²,

Buckwalter

et al. 2015

IEEE Trans. Microwave Theory Techn.

Self Cite

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Improved resonator phase shift in passive and active coupled LC Quadrature Oscillator

Chaharboor

Ghonoodi

2017

2017 Iranian Conference on Electrical Engineering (ICEE)

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Temperature Sensitivity of Non-Degenerate Modes in CMOS LC Quadrature Oscillators

Bagheri

Buckwalter

et al. 2018

IEEE Trans. Circuits Syst. II

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CMOS LC quadrature oscillators with enhanced tuning range by selective mode switching

Cited by 4 publications

References 15 publications

Tuning-Range Enhancement Through Deterministic Mode Selection in RF Quadrature Oscillators

Tuning-Range Enhancement Through Deterministic Mode Selection in RF Quadrature Oscillators

Improved resonator phase shift in passive and active coupled LC Quadrature Oscillator

Temperature Sensitivity of Non-Degenerate Modes in CMOS LC Quadrature Oscillators

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